What we do know is that Katy won't be the only star in the Super Bowl spotlight.

Lenny Kravitz will also be sharing the stage with Katy during halftime, while Idina Menzel will be singing the "Star Spangled Banner" in her first big performance since catching flack for her New Year's Eve performance of "Let It Go," where she failed to hit some notes live.

In response to her critics, Idina posted an old interview of hers to Twitter, which read in part, "There are about three million notes in a two-and-a-half-hour musical; being a perfectionist, it took me a long time to realize that if I'm hitting 75 percent of them, I'm succeeding. Performing isn't only about the acrobatics and the high notes: It's staying in the moment, connecting with the audience in an authentic way, and making yourself real to them through the music. I am more than the notes I hit."

"It's warmer here, let's just say that," Idina said about how she expects her Super Bowl performance to go. "I will be singing 100 percent live."

Jordin Sparks, who sang the "Star Spangled Banner" at the Super Bowl in 2008, gave some inspiring words to Idina.